As the 650 is an auto-indexing progressive, it is much harder to create squibs and double-charges. Dillon is first rate. I don't have any experience with Hornady, but their progressive machine is in direct competition with the 650 for less money. But Dillon's customer service is legendary and I doubt Hornady can equal it. I think you are making the right choice with the 650 for a first press and Dillon will be right there with you to make your purchase work for you.